Interior Light Circuit [02/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Active Test.
5. Perform the Active Test according to the display on the Techstream.

   Body Electrical > Main Body > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Illuminated Entry System	Turns on the lights that are controlled by the illuminated entry system*	ON or OFF	Perform the Active Test with interior light DOOR switch in the map light assembly turned on.
   *: Refer to Description for the lights that are controlled by the illuminated entry system. Refer to DESCRIPTION

   Body Electrical > Main Body > Active Test 

   Tester Display
   Illuminated Entry System

   OK

   All lights that are controlled by the illuminated entry system come on.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [02/2014 - ]  

Result:  3

NG 

See step  2

1. Remove the map light assembly.

   Refer to REMOVAL [02/2014 - ]

2. Inspect the map light assembly.

   Refer to INSPECTION [02/2014 - ]

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPLACE MAP LIGHT ASSEMBLY. Refer to  REMOVAL [02/2014 - ] 

Result:  1

OK 

See step  3

1. Disconnect the 4D instrument panel junction block connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4D-12 - S1-9 (CTY)	Always	Below 1 Ω
   4D-12 or S1-9 (CTY) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  1

OK 

See step  4

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [02/2014 - 11/2016] Refer to REMOVAL [11/2016 - ]

2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

   Refer to REMOVAL [02/2014 - 11/2016] Refer to REMOVAL [11/2016 - ]

3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4D-12 - MB-1 (ILE)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [02/2014 - 11/2016]  Refer to  REMOVAL [11/2016 - ] 

Result:  2

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [02/2014 - 11/2016]  Refer to  REMOVAL [11/2016 - ]